Re: Inaccuracy in VACUUM's tuple count estimates

On Fri, Jun 6, 2014 at 3:44 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> It did not use to blow this question off: back around 8.3 you got
> DELETE_IN_PROGRESS if the tuple had a delete pending. I think we need
> less laziness + fuzzy thinking here. Maybe we should have a separate
> HEAPTUPLE_INSERT_AND_DELETE_IN_PROGRESS result code? Is it *really*
> the case that callers other than VACUUM itself are okay with failing
> to make this distinction?

I think that would be a good idea for conceptual clarity if nothing
else. If callers are OK with it, then they can treat both of those
codes alike; but then at least there's clear evidence as to the
author's intent.

--
Robert Haas
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